Load Specifications
Load data in caliber .300 Rem. Ultra Mag. with .308 | 162gr | SAKO Blade bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Accurate MAGPRO and Ramshot Grand.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 56,463 psi | 87% | 2943 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,159 psi | 88% | 2979 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 55,332 psi | 85% | 3035 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 57,899 psi | 89% | 2946 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 58,726 psi | 90% | 3041 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 56,579 psi | 87% | 3045 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,749 psi | 78% | 2933 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,324 psi | 70% | 2887 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 58,494 psi | 90% | 3045 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,854 psi | 86% | 2999 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 58,015 psi | 89% | 3025 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,565 psi | 87% | 3038 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,856 psi | 89% | 3005 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,537 psi | 89% | 3064 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,578 psi | 84% | 3038 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 58,450 psi | 90% | 3002 fps | 96.9% |
| Bofors RP15 | <<locked>> | 96% | 55,535 psi | 85% | 3018 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,301 psi | 82% | 3002 fps | 98.8% |
| Bofors RP5 | <<locked>> | 94% | 56,565 psi | 87% | 3038 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 55,738 psi | 86% | 2933 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,260 psi | 87% | 3025 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 55,259 psi | 85% | 2982 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 57,798 psi | 89% | 2995 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 56,347 psi | 87% | 2979 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,071 psi | 85% | 2959 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 58,595 psi | 90% | 2956 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 56,347 psi | 87% | 3140 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,333 psi | 87% | 3015 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,883 psi | 57% | 1929 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,682 psi | 89% | 2969 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,305 psi | 88% | 2959 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 57,580 psi | 89% | 2969 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,217 psi | 88% | 2966 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 58,494 psi | 90% | 3081 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 57,841 psi | 89% | 2949 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,144 psi | 86% | 2946 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,551 psi | 89% | 2959 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,172 psi | 85% | 2969 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 40,901 psi | 63% | 2812 fps | 98.1% |
| Norma MRP | <<locked>> | 92% | 56,594 psi | 87% | 3058 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,724 psi | 86% | 2966 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,085 psi | 85% | 3035 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 58,639 psi | 90% | 3025 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 58,305 psi | 90% | 3028 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,652 psi | 58% | 1972 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,624 psi | 89% | 3002 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,318 psi | 87% | 3035 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,986 psi | 89% | 3136 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,678 psi | 81% | 3015 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 57,043 psi | 88% | 2933 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,738 psi | 86% | 2953 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 92% | 57,566 psi | 89% | 3015 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 55,738 psi | 86% | 2933 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,841 psi | 89% | 2949 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,144 psi | 86% | 2946 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,695 psi | 87% | 2808 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,232 psi | 88% | 2904 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,130 psi | 88% | 3012 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 56,681 psi | 87% | 2930 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,769 psi | 89% | 2940 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 56,275 psi | 87% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,899 psi | 89% | 2982 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 58,102 psi | 89% | 2897 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,435 psi | 88% | 2956 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,870 psi | 89% | 2963 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 56,855 psi | 88% | 2963 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,014 psi | 86% | 2982 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,347 psi | 87% | 3054 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 56,492 psi | 87% | 3028 fps | 98.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,461 psi | 82% | 3022 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,479 psi | 88% | 2910 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,506 psi | 85% | 2986 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 56,289 psi | 87% | 3084 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 58,305 psi | 90% | 2982 fps | 99.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 34,330 psi | 53% | 2543 fps | 96.9% |
| Accurate 4350 | <<locked>> | 80% | 46,311 psi | 71% | 2812 fps | 100% |
| Accurate MAGPRO | 83.6 gr | 86% | 44,367 psi | 68% | 2838 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 54,273 psi | 84% | 2897 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,682 psi | 60% | 2684 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 86% | 42,569 psi | 66% | 2792 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 94% | 41,147 psi | 63% | 2746 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 92% | 34,461 psi | 53% | 2635 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,353 psi | 68% | 2822 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,721 psi | 80% | 2940 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,725 psi | 60% | 2677 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,014 psi | 57% | 2671 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,069 psi | 51% | 2575 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 82% | 30,748 psi | 47% | 2533 fps | 96.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,506 psi | 56% | 2710 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,329 psi | 79% | 2881 fps | 95.1% |
| Bofors RP15 | <<locked>> | 86% | 39,479 psi | 61% | 2723 fps | 95.9% |
| Bofors RP30 | <<locked>> | 92% | 40,030 psi | 62% | 2756 fps | 95.5% |
| Bofors RP5 | <<locked>> | 82% | 37,014 psi | 57% | 2671 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 48,892 psi | 75% | 2822 fps | 99% |
| Hodgdon H1000 | <<locked>> | 90% | 39,276 psi | 60% | 2707 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 48,225 psi | 74% | 2867 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 50,763 psi | 78% | 2884 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 45,542 psi | 70% | 2795 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 86% | 44,701 psi | 69% | 2779 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,814 psi | 64% | 2703 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,927 psi | 57% | 2743 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 48,211 psi | 74% | 2887 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,630 psi | 43% | 1732 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,498 psi | 68% | 2749 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,444 psi | 78% | 2848 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 44,048 psi | 68% | 2759 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 44,019 psi | 68% | 2740 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 40,886 psi | 63% | 2766 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 47,834 psi | 74% | 2795 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 46,180 psi | 71% | 2782 fps | 99.1% |
| Lovex S071 | <<locked>> | 82% | 31,328 psi | 48% | 2467 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 44,556 psi | 69% | 2785 fps | 97.3% |
| Norma 217 | <<locked>> | 96% | 35,447 psi | 55% | 2684 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 36,100 psi | 56% | 2674 fps | 96.3% |
| Norma URP | <<locked>> | 80% | 45,498 psi | 70% | 2802 fps | 99.9% |
| Ramshot Grand | 81.4 gr | 86% | 40,727 psi | 63% | 2769 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 44,382 psi | 68% | 2792 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 86% | 36,318 psi | 56% | 2641 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,094 psi | 43% | 1772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,557 psi | 72% | 2831 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,831 psi | 69% | 2848 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,794 psi | 52% | 2648 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,759 psi | 69% | 2871 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 53,345 psi | 82% | 2881 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 42,699 psi | 66% | 2723 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 37,898 psi | 58% | 2661 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 48,892 psi | 75% | 2822 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,834 psi | 74% | 2795 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 46,180 psi | 71% | 2782 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,243 psi | 82% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,818 psi | 72% | 2740 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,579 psi | 58% | 2651 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 53,113 psi | 82% | 2877 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,801 psi | 67% | 2707 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 42,525 psi | 65% | 2756 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,508 psi | 59% | 2644 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 80% | 50,937 psi | 78% | 2799 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,992 psi | 72% | 2799 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,679 psi | 55% | 2566 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 46,238 psi | 71% | 2795 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 36,970 psi | 57% | 2651 fps | 99.3% |
| Vihtavuori N560 | 80.2 gr | 84% | 42,206 psi | 65% | 2799 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 42,322 psi | 65% | 2779 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 96% | 46,021 psi | 71% | 2887 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,340 psi | 71% | 2753 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,225 psi | 74% | 2867 fps | 99.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,298 psi | 45% | 2579 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,840 psi | 58% | 2621 fps | 95.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 74 powders for .300 Rem. Ultra Mag. loaded with the .308 | 162gr | SAKO Blade. Hodgdon Retumbo delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,140 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 162.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Vihtavuori N560, Accurate MAGPRO, Ramshot Grand rank at the top here: for .300 Rem. Ultra Mag. with the .308 | 162gr | SAKO Blade they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.